Bash

bash

Bash shell scripting for automation, pipelines, and system administration. Use for .sh files and Linux scripting.

G1Joshi/Agent-Skills·1installs14starsDevOps & CI/CD

SKILL.md

Full skill instructions

Bash

Bourne Again SHell, the standard shell for Linux and macOS.

When to Use

Automating system tasks
CI/CD pipelines
File manipulation
Glue code between CLIs

Quick Start

#!/bin/bash

NAME="World"
echo "Hello, $NAME!"

if [ -f "file.txt" ]; then
    echo "File exists"
else
    echo "File not found"
fi

Core Concepts

Variables

No data types. Everything is a string.

count=10
echo $count

Pipes and Redirection

|: Pipe output of one command to input of next.
>: Redirect output to file (overwrite).
>>: Redirect output to file (append).

cat file.txt | grep "error" > errors.log

Exit Codes

Commands return 0 for success and non-zero for failure. Check with $?.

Best Practices

Do:

Use set -e (e)xit on error
Use set -u (u)nset variable usage is error
Use set -o pipefail to catch errors in pipes
Quote variables "$VAR" to handle spaces

Don't:

Parse ls output (use globs *)
Use simple [ vs [[ (double brackets are safer)

References

Install skill

Copy and run in your terminal

npx -y skills add https://github.com/G1Joshi/Agent-Skills --skill bash

View on GitHub

skills/languages/bash/SKILL.md

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